Temporary fix ceilometer-collector dpkg bug 1221945

See https://bugs.launchpad.net/cloud-archive/+bug/1221945
The ubuntu cloud archive ceilometer-collector pkg has a bug in which init
script isn't installing properly gets installed as:
/etc/init/ceilometer-collector.conf.dpk-new therefore until it gets fixed this temp
solution works

Change-Id: Ie7a82f2b76e81c42c2880e3785fa9c164e7896a0
Add depedency for python-mysqldb package

If missing, ceilometer db-sync throws errors the library is missing

Change-Id: Ifc84f1a787e39dc8b95fd47f4c4d4c593d5b20ee